:root {
  --cream: #fffcf2;
  --red: #ff343b;
  --void: #070707;
  --ink: #000000;
  --ease: cubic-bezier(0.76, 0, 0.24, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body {
  background: var(--void);
  color: var(--cream);
  font-family: Outfit, system-ui, sans-serif;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

.vignette,
.grain,
.flare {
  pointer-events: none;
  position: fixed;
  inset: 0;
}

.vignette {
  background: radial-gradient(ellipse at center, transparent 38%, rgba(0, 0, 0, 0.55) 100%);
  z-index: 1;
}

.grain {
  opacity: 0.07;
  z-index: 1;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.9'/%3E%3C/svg%3E");
  animation: grain 0.9s steps(2) infinite;
}

.flare {
  z-index: 0;
  background: radial-gradient(circle at 50% 42%, rgba(255, 52, 59, 0.16), transparent 34%);
  opacity: 0;
  transition: opacity 1.2s var(--ease);
}

body[data-tone="red"] .flare {
  opacity: 1;
}

.stage {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  min-height: 100%;
  padding: 8vh 6vw 10vh;
}

.mark {
  perspective: 1600px;
  width: min(72vw, 280px);
  height: min(99vw, 385px);
  transform-style: preserve-3d;
  --radius: 230px;
}

.carousel {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 1.45s var(--ease);
}

.slide {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  transform: rotateY(var(--yaw)) translateZ(var(--radius, 230px));
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  box-shadow: 0 28px 40px rgba(0, 0, 0, 0.45);
}

.slide svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: hidden;
}

.copy {
  position: relative;
  z-index: 6;
  margin-top: 6vh;
  text-align: center;
}

.word span {
  display: block;
  font-size: clamp(0.8rem, 1.8vw, 1rem);
  font-weight: 300;
  letter-spacing: 0.55em;
  text-indent: 0.55em;
  text-transform: uppercase;
  color: var(--cream);
  animation: rise 1.1s 0.2s var(--ease) both;
}

.rule {
  width: 48px;
  height: 1px;
  margin: 22px auto 0;
  background: var(--cream);
  transform: scaleX(0);
  animation: draw 1.2s 0.8s var(--ease) both;
}

.ticks {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 28px;
}

.ticks button {
  width: 18px;
  height: 2px;
  border: 0;
  padding: 10px 0;
  background: transparent;
  cursor: pointer;
}

.ticks button::after {
  content: "";
  display: block;
  height: 2px;
  background: color-mix(in srgb, var(--cream) 28%, transparent);
  transition: background 0.4s ease, transform 0.4s ease;
}

.ticks button[aria-current="true"]::after {
  background: var(--cream);
  transform: scaleX(1.35);
}

@keyframes rise {
  from {
    transform: translateY(120%);
  }
  to {
    transform: translateY(0);
  }
}

@keyframes draw {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

@keyframes grain {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(-1%, 1%);
  }
}

@media (max-width: 640px) {
  .mark {
    --radius: 170px;
    width: min(64vw, 220px);
    height: min(88vw, 302px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .carousel,
  .word span,
  .rule,
  .grain {
    animation: none !important;
    transition: none !important;
  }
}